Summary:
Changelog: Register shortcuts only for Flipper application instead of globally. Fixes https://github.com/facebook/flipper/issues/3090
As reported, during decapitation we accidentally started registering shortcuts globally, rather per app as it used to be in the menu's. This diff fixes that and also makes sure shortcuts are supported in the browser version of flipper
Reviewed By: lawrencelomax
Differential Revision: D33158445
fbshipit-source-id: 8371e5b96e772152eeb93ba990e1f5edb9e67085
